S moke- burn ing apparatu s fq r steam -boilers



(No Model) 2 she'ecs- Sheet- 1.

. I R. CAREY.

SMOKE BURNING APPARATUS FOR STEAM BOILERS..

No. 497.305. Pat ented.1V[a,y16,.-1893.

2 Shets-Sheet 2. f

(No Model.) I

' R. CAREY. SMOKE BURNING APPARATUS FOR STEAM BOILERS. No 49?,305.

Patented May 16, 18-93.

fS'rnTna i rion storms]; CAREY, on onioneorliainois.

"YSJMGKEI-JBIURN'IY-NYG APPARATUS FORSTEAM-softens,

srnorrionrionrbrming part of Letters Patent nafieaeo s, dated May 16, 1 393;

:llpplication filed m s, 1892.-

To aZLwZwm it mayconcernr Be it known that LR o Ann CARE Y, acitizen of the United States of America, residing in Ohicag in the county of Cook, State of Illinois, have, invented a new and useful Smoke-Burning Apparatus forSteam Boilers, of which the following is a co mplete description and specification. v f g k My invention relates-to improvements in steam boiler scttin gs, which are so constructed as to give the most efficiency of the fuel used by a, thorough consumption ofalltlie combustible particles, andhence'toa great extent the burning of smoke and-gases, which in theordinary steam boiler is passedout direct from I the furnace through the tubes or fines into the chimney carrying oif'to a"considerableerr-- tent, a good portion 01": the heated gases. In my invention I have the principle of the boiler setting so constructed as to temporarily check and holdthe smoke and gases formed from a direct escape.

The object of my invention is to produce a smoke burning furnace so constructed in the setting of the steam boiler that bymy im' provements two distinct features are involved, first the checking of the direct escape of coinbustible gases, and thereby retaining a larger quantity of theheateliminated in their liber ation. Secondly to burn the smoke produced by the liberation of these gases and thereby to a great extent diminish the smoke nuisance that is now prevailing.

While I am aware that great efforts of others have been made in this direction, and that their success has been more or less questioned, I state that while my apparatus appears very simple. and trifling in its construction, the

theoretical and the practicaldemonstration,

by its practical use, has beyond all doubt proved that this-questionof smoke nuisances has been solved.

The principle involved in this apparatus consists chiefly ofoollectin-g and holding te1nporarily the smoke and gases produced, and by so placing the aceumulationchamber for the smoke and gases in such a manner asto force the gases, when trying-to escape, to come intofcontact with the hottestjpart of the flame thereby consuming all the combustible parts of the smoke and gases, I obtain these ob..

SerialNcASQfiiiQ. tNoinodel.)

jeot's through thefollowing instrumenta'lities' described and shown in the accompanying drawings, in which I Figure 1 is a longitudinalcross section of the boilersettingshowing a cross section of my invention applied immediately under the boiler and back of the fire bridge, Fig, 2. is a vertical cross'se c't-ion through the boiler and boiler settin g, showing the form of both walls in nentlyshow my invention,

Similar letters refer to s1milar'parts'througlr' out the several views.

.[yinvent n consists simply of placing a retaining wall at a proper distance from the fire bridge, said wall being placed on suitable supports between the two sides of the boiler setting, The distance between the fire bridge and the "first retaining wall of, my smoke burning apparatus is decided by the'area'of the chimney and by-the size of the grate surface accordingrto the size of the boiler but its area will be no less-than the area bet-ween the under side of the boiler and the tire bridge. The retaining wall will not be made higher than the height of the fire .walL The second retaining wall for the smoke will be placed according to thesize of'th'e boiler at a certain distance from the first retaining wall, and said wall will be built from its support clear up to and around its lower half'part', said walls be ing connected'at the lower part byan arch or bottom extending from one to the other, from. wall to wall, and from sideto side of boiler setting forming-a pocket or closed combustion chamber with no other outlet thant-he spacepreservedbetween the fire bridge and the, first retaining wall, and through which space the flame must absolutely pass down and under'the bottom of said pocket. The bottom of said pocket may be} supported by an'arch froniside to side of boiler setting or by suitablyarranged iron beams from side to side of boiler. setting. p

lnspeakin'g 'of the sides of boiler setting,

loo

I mean the walls 4 and 5 shown in Fig. 2. At a proper distance from the last retaining wall 9, reaching ,up to the under part of the boiler,

I place a third wall 10, its main object being that when the flame has passed through the opening formed by the back part of the fire bridge and the first retaining wall, and under the bottom of the pocket by the first and second retaining walls, to throw said flame up against the back part of the boiler. The working of said smoke burning apparatus is as follows. \Vhen the smoke and gases liberated by'the consumption of the fuel, pass over the fire bridge. it enters into the pocket formed by the first retaining wall 8 and second retaining wall 9 where no outlet is found, the smoke and gas is then forced to revolve around and return back through the opening formed between the boiler and the first retaining wall and then down through the opening or space between the back part of the fire bridge and the first retaining wall causing said gas and smoke to come into immediate contact with the hottest part of the flame from the fire, also said flame will tend to keep the bottom of said pocket and also first retaining wall into a high degree of glowing heat, which will assist in the partial combustion of the smoke and gases formed.-

After having passed through the last opening and through spaces formed between the back part of the fire bridge and retaining wall and under the arch or pocket of said combustion chamber (IE) it is further consumed by being broughtinto immediate contact with said arch held glowing by the constant playing of the flames against and under same. It may be seen that the apparatus serves its two objects,

first that of retaining the gases so as to secure a more thorough combustion of these gases before they pass out into the chimney,

as in the ordinary boiler furnaces, thereby retaining a considerable amount of heat that would otherwise escape without any direct benefit.

A hasty examination and judgment of this apparatus might tend to lead any one to believe, the checking of the draft, that was absolutely necessary for the supply of enough of oxygen usedin the combustion, wouldtend to a sluggish action of the fire and presenfi'a new difficulty that of keeping up steamfbut what we otherwise would gain by a brighter tire is gained in the economy of utilizing more of the heat. involved in the production of the gases liberated by the combustion, which means that this will fully offset the less bright fire produced by the checked draft. It may be argued that the greater the draft the more intense the heat with a proper amount of fuel, butit must be borne in mind also that the greatelg the intensity of the fire, the quicker is the cumbustion and escape of the created gases. Hence I wish to state as before ,mentioned, that the gaining, in a retaining of these gases is greater than 'bottom portion of the pocket, which are kept in a glowing or incandescent heat-by the action of the flames playing directly against them, and the combustible-parts tl1ereof consumed, and the flames caused by the ignition of these particles made tocome incontact with and are thrown by the third retalnmg wall up against the back surface of the boiler. It will also'b'e seen that the firstretamlng wall (8) subserves another purpose than that of forming with the second retaining wall a combustion chamber, in that it-form's a wall of incandescency, by being indirect contact with the flames, and hence thelarger' the area of incandescency the greater the efficiency obtained, producing results which could not be secured if the flames only struck against the surface of the arch. g

I am aware that the idea of temporarily 5- checking the gases and smoke liberated by the consumption of the fuel for the purpose of burning the same is not broadly new, bulk- Having thus described my invention, what I" claim as new, and pray that Letters Patent will be granted to me, is- V 1. In a boiler setting, the combination with suitable side supporting walls,.of a central retaining wall which extends up to and around the lower surface of the boiler, a first retainin g wall forward of the said central wall, and an arched bottom portion connecting said walls, the first retaining wall and the arched bottom portion being in close proximity to the fire bed and the space between the walls forming a pocket, whereby the gases and smoke llberated by the consumption of the fuel on the fire bed, entering said pocket,'are thrown back and down against the first retaining wall and the arched bottom portion, heated to incandescency by the flames playing directly against them, and are consumed, substantially as described.

2; In a boiler setting, the combination with suitable side supporting walls, of a central re-"j 12o tainin g wall which ex tends up to and around the lower surface of the boiler, a first retaining wall forward of the said central wall,and an arched bottom portion connecting said. wall the first retaining wall and the arched bottom L portion beingin close proximity to the fire bed" and thespace between the walls forming a pocket, whereby the gases and smoke -1iber= ated by the consumption of the fuel on the'. die bed, entering said pocket, are thrbwn r30 back and down against the first retaining wall and the archedb'ottom port-ion, heated, to in 497,305 v I I -s canfieseency by the flames playing directly against them, and are consumed; and a third retaining wall in rear of the'centra1 wall which is adapted toithrow the flames, after they pass through the opening formed be-- tween the back part of the fire bridge and the first retaining Wall, and underthe bottom of the pocket by the first and second ret aining walls, up against the back surface of the boiler, substantially as described.

In testimony whereof I have affixed my signature in presence'of iwowitnesses. RICHARD CAREY.

Witnesses:

PHILIP LATMQN,- AXEL JOHNSON. 

